SHOUT is the IOA notification facility by which operations personnel and departmental users are notified of significant events in the production environment. The SHOUT mechanism enables Control‑M to send notifications to VM users instead of, or in addition to, other MVS destinations.

The VM operating system does not employ a function equivalent to the MVS BROADCAST function, which maintains user notification messages. If a SHOUT is issued to a VM user who is not logged on at that time or to a VM user who has suppressed the receipt of messages, the SHOUT is not effective.

The following is a brief list of IOA techniques can be used to send notification messages to a VM user. All of these techniques allow you to verify that the notification message has reached its destination.

• using utility IOAOPR
• using the VM IOAVAUTO machine
• other IOA options